Real-time coverage of earthquake event — 271 km WSW of Tual, Indonesia — Pandita Data.
🌍 OPEN LIVE 3D EARTHQUAKE MAPA magnitude 6.2 earthquake struck 271 km west-southwest of Tual, Indonesia on May 14, 2026 at 17:53 UTC, at a depth of 146.1 km. The deep-focus rupture released significant seismic energy across the Banda Sea region, though preliminary reports indicate minimal ground shaking at populated centres. The USGS issued a GREEN PAGER alert, reflecting low to moderate anticipated impact. No tsunami warning was issued due to the hypocentric depth and rupture geometry. Only 13 felt reports were filed, consistent with energy dissipation over distance and the deep subduction-zone mechanism.
The earthquake occurred within the Banda Arc subduction zone, one of the world's most geometrically complex plate boundaries. Here, the Indo-Australian Plate descends beneath the Eurasia Plate at rates exceeding 6 cm/year. The region is characterized by extreme curvature—the arc bends through nearly 180 degrees from east to west. Tual sits on the island of Yamdena, part of the Tanimbar Islands, which lie directly above the subducting slab. Deep-focus earthquakes (>70 km) in this region result from slab-pull stresses and internal deformation within the descending lithosphere, rather than rupture along the plate interface itself.
At 146.1 km depth, this earthquake ruptured within the oceanic lithosphere of the subducting Indo-Australian Plate. Deep subduction-zone earthquakes release energy through brittle failure of cold, dense material under extreme confining pressure. A magnitude 6.2 event radiates approximately 1.0 × 10^18 joules—equivalent to 239 kilotons of TNT. The rupture likely propagated along a steeply-dipping fault plane, typical of intermediate-depth seismicity. Energy dissipation increases dramatically with depth: seismic waves lose amplitude as they traverse mantle rock, reducing ground acceleration at the surface. This depth explains the sparse felt reports despite the significant magnitude.
Earthquakes deeper than 70 km behave differently from shallow ruptures. Reduced ground shaking: Energy scatters through thick rock layers, arriving at the surface as weak motion. No tsunami generation: The rupture occurs well below the seafloor; vertical crustal displacement is minimal. Wider felt area: P-waves (primary) and S-waves (secondary) travel across larger distances, so distant regions may detect motion before nearby ones. The Banda Arc regularly produces M6+ deep-focus events; this earthquake fits the regional seismic pattern.
Tual, the nearest major settlement (~271 km away), experiences frequent small earthquakes from the subduction zone. Yamdena Island has a population of approximately 50,000, concentrated in small towns including Saumlaki. The May 14 rupture generated weak to moderate ground motion in the epicentral region but did not trigger structural damage reports. The Banda Sea remains one of Indonesia's most seismically active maritime zones; historical catalogs document at least four M7+ earthquakes since 1900. Infrastructure in the Tanimbar Islands is limited, reducing overall vulnerability. Regional monitoring by the Indonesian Meteorological, Climatological and Geophysical Agency (BMKG) confirmed no aftershocks above M5.0 in the hours following the mainshock.